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Finding the Fourth Proportional to 400,761.36, 600,727.32 and 190,239.12

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Solution

The fourth proportional to 400,761.36, 600,727.32 and 190,239.12 is: 285,161.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    400,761.36 : 600,727.32 = 190,239.12 : x
  2. Step 2: Convert to fraction form
    400,761.36/600,727.32 = 190,239.12/x
  3. Step 3: Cross multiply
    400,761.36x = 600,727.32 × 190,239.12
  4. Step 4: Simplify right side
    400,761.36x = 114,281,836,716.76
  5. Step 5: Solve for x
    x = 114,281,836,716.76/400,761.36
  6. Step 6: Final answer
    x = 285,161.81

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.